摘要
金属氧化物避雷器现场带电测试经常由于相间干扰的缘故,难以准确测量其阻性电流。以最普遍的三相直线排列的氧化物避雷器为研究对象,对其在相间干扰影响下的运行特征进行了分析,得出其全电流的误差特性,并研究了边相补偿的原理和实际应用,指出了在实际的运行环境中,要准确测得阻性电流分量是非常困难的,也是不必要的,带电测试的关键是确定阻性电流相关量的增量及其变化趋势。
Because of the interphase interference,while making the live measurement of MOA,it＇s difficult to accurately measure the resistive current.Study on the most common three-phase linear MOA,the operation characteristics under the influence of its interphase interference are analyzed,the error characteristics of its full current are obtained,the principles of edge phase compensation and practical applications are studied,and it is indicated that in the actual operating condition,it＇s very difficult to accurately measure resistive current,and it＇s unnecessary,the key of live testing of MOA is to determine the amount of incremental and related trends of resistive current.
出处
《电瓷避雷器》
CAS
北大核心
2012年第1期56-60,共5页
Insulators and Surge Arresters
关键词
金属氧化物避雷器
带电测试
阻性电流
相间干扰
边相补偿
metal oxide arrester
live measurement
resistive current
phase interference
edge phase compensation
